Is there a way to remove double from the variable?

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In the workspace, my variable is: lableimage < 359x476x3 double > Whenever I reshape it into a single column, the result is not 170884x1 but 512652x1. Also, because its double, the LDA is not working. Any suggestions?
  8 Comments
Lester Lim
Lester Lim on 24 Jan 2013
Line error : projectedSamples = samples * vectors;
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Error:
Error using * MTIMES is not fully supported for integer classes. At least one input must be scalar. To compute elementwise TIMES, use TIMES (.*) instead.
Error in LDA/Transform (line 60) projectedSamples = samples * vectors;
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Input: data = importdata('LDA data.mat')
features=data(:,1:end-1); %split data without labels
lable=data(:,end); %get the labels
trainSamples = features;%training samples
trainClasses = lable;%training labels
I2 = reshape(I,[],1);
testSamples = I2;%test samples
lableimage = reshape(handles.lableimage,[],1);
testClasses = lableimage;%test labels
mLDA = LDA(trainSamples, trainClasses);
mLDA.Compute();
transformedTrainSamples = mLDA.Transform(trainSamples, 1);
transformedTestSamples = mLDA.Transform(testSamples, 1);
calculatedClases = knnclassify(transformedTestSamples, transformedTrainSamples, trainClasses);
simmilarity = [];
for i = 1 : 1 : length(testClasses)
similarity(i) = ( testClasses{i} == calculatedClases{i} );
end
accuracy = sum(similarity) / length(testClasses);
fprintf('Testing: Accuracy is: %f %%\n', accuracy*100);
guidata(hObject, handles);
Walter Roberson
Walter Roberson on 24 Jan 2013
The mtimes problem is being discussed in another earlier thread.

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Accepted Answer

Walter Roberson
Walter Roberson on 24 Jan 2013
To convert an array such as labelImage from being double to being uint8, use
newArray = uint8(labelImage);

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